It is a no-name product, in this case to a castle with strong quality deficits. The shackle-print "hardened" (hardened) says nothing about the safety of a castle, this would have been the type of steel be specified! The weight of a safety lock of this size would be about 300g! Some light strokes with a standard hacksaw show rapid progress against the shackle, which would have sawn through by hand in about 5 minutes! In comparison, a really hardened steel, which comes to the safe locks are used, creates a common hacksaw barely scratching the surface of the steel to reach. The locks are offered here so miles of "security locks" away! Whether the more expensive offer the same kind of security locks serve more needs (type of steel? Weight?) Must be individually examined are! Price information alone say anything! Other "Special": Numerous Kratzerchen on the housing surface refer immediately to a cheap mass production! Some castles close to the first opening not again because a sharp ridge on the housing prevents this. With a small file can eliminate this ridge. When entering and execution of key leads to stagnation, resistances that have to be overcome. As with almost any other castle can be the entire mechanism when locking and unlocking by friction and noise always sympathize. As long as the key is inserted, can be carried out with ei8ner strong hand on the bracket of the entire locking mechanism! Two holes on the back to ensure that liquids can penetrate unhindered guaranteed. The housing imprint Stainless Steel to increase faith, which begins here nothing to rust. In some places, the housing may comprise small notches, the chrome plating on the bracket may already be locally attacked or even exfoliated.